xref: /illumos-gate/usr/src/test/libc-tests/tests/random/arc4random_rekey.c (revision 9b9d39d2a32ff806d2431dbcc50968ef1e6d46b2)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright (c) 2015, Joyent, Inc.
14  */
15 
16 /*
17  * This test is designed to fill a buffer with arc4random_buf and ensure that we
18  * rekey ourselves multiple times during this test. We have a 4 Mb buffer and
19  * currently we rekey ourselves every ~1.53 Mb. A wrapper script should call
20  * this with an appropriate bit of D to verify the rekey.
21  */
22 
23 #include <stdlib.h>
24 #include <assert.h>
25 #include <errno.h>
26 
27 #define	NENTS	(4 * 1024 * 1024)
28 
29 int
30 main(void)
31 {
32 	uint8_t *buf;
33 
34 	buf = malloc(NENTS);
35 	assert(buf != NULL);
36 	arc4random_buf(buf, NENTS);
37 
38 	return (0);
39 }
40